The rear bicycle derailleur guides a chain to one of a plurality of rear sprockets. The rear derailleur includes a base member, a linkage assembly, a movable member, a chain guide, a biasing member, and a biasing member connection structure. The base member is mounted to the bicycle frame. The linkage assembly is rotatably linked to the base member and the movable member. The movable member is capable of movement toward or away from the frame by rotation of the linkage assembly. The chain guide is pivotally linked to the movable member. The biasing member biases the movable member relative to the base member. The biasing member connection structure attaches the biasing member in either of two different biasing states to selectively bias the movable member toward or away from the frame.

 
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